Electrical power-driven operator unit



y 1951 c. E. SCHLYTERN 2,562,823

ELECTRICAL POWER DRIVEN OPERATOR UNIT Original Filed March 21, 1947 2 Sheets-Sheet 1 E l \f l 4/ 43 q l I 0 0 '11 43 1:1, =5

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IN VHV TOR. CHARLES E SGHLYTERN BY 9070M y 1951 c. E. ,SCHLYTERN 2,562,823

ELECTRICAL POWER DRIVEN OPERATOR UNIT I Original Filed March 21, 1947 2 Sheets-Sheet 2 EzlE- E LZ/ L 23 J23 3 .70% W His Ai'i'ornqy Patented July 31, 1951 Charles, E. schlytern lletroit, Mich. I Original application: March 21, 1847,. Serial No;

Dividedand thiezappilcation September 14, 19-18, Serial No. 49,250

((31; TIE-36) 3 claims.

My v invention pertains to electrical motorized power driven means and more especially to an electrical operator unit for moving a member, such as a door for example, back and forth. be:- tween various. positions, at will, and this application is a divisional of my previously filed patent applicationSerial No. 736,373 filed March 21, 1947 for Power Driven Operating Means.

It is-an object of 'my invention to provide an improved compact electrical operator pack of anelectrical motor and controls in a unit which is especially convenient to install and wire.

It is also'an object of my invention to provide such an operator unit which is adapted tobe mounted cooperatively adjacent the member. to be moved back and forth.

Further objects and advantages are within the scope of my invention, such as relate to the arrangement, operation and function of the related elements of the structure, to various detailsof the construction and to combinations of parts, elements per se, and to economies of manufacture and numerous other features as will. be apparent from a consideration of the specification in con.-' junction with the drawings disclosing specific embodiments of the invention, in which:

Fig, 1. is a side elevational view showing the power and control operator unit;

Fig. 2 is an elevational'view showing the inner sideor garage side of'the power unit;

Fig. 3 is a bottom view of the power unit;

Fig. 4' is a: plan view-ofthe control supporting bracket;

Fig- 51s a plan view of the socket plate;

Fig. 6- is a diagram for illustrating the operation of the reversing switch bythedown limit stop on' the member to be operated;

Fig; 7- isa'diagram showing operation or the reversing switch by the up limit stop from the cable;

Fig. 8 is an enlarged fragmentary view-showing the: lock and the electromagnetically movable lock. strike;

Fig, Qisacmss-sectional view'on'line 8-1-8 in Fig. 8; and

Fig. 10 isa. wiring diagram schematically representinggthe electrical circuits. and control means for operating the motor, the electriclight and a lock strike for. the member.

Referring more specificallyto Figs. 1 and f the drawings, it willbe seen that my operator pack or. power unit comprises-a. conventional geared-electric motor M having a housing, on oneend enclosing. a speed reducing worm. gear transmission. on which i provide a. drive shaft 43 extending to both sides for convenient coucoupler 44, to the. door shaft right-hand or the left-hand D11ng,,as. by a loose 2| fromeither the side of the door.

On the opposite end of such a motor I install a second housing 45 which is secured by screws 41 to a bracket 49, of a generally U-shaped crosssection, and the upper ends of the side-walls. of this bracket are secured to the adjacent end bell of the motor, as by screws 5|. This bracket is seen in side elevation in Fig. 2 and edgeor end elevation in Fig. 1. Fig. 4 shows a plan view of the. bracket, where it is seen that the four outer corners of the side-walls are providedwith holes 53 from receiving the motor attachment screws 5|, andthelower yoke portion of the bracket is providedlwithholes55 for the screws 41. In the centerof the lower yoke of this bracket a, hole 51 is provided for receiving the mounting. bushingto mount a conventional panel type. toggle switch 59 held in the bracket by the usual. panel nut in with they toggle lever and terminal ball 50' projectingexternally. Between the lower end or yoke. of the bracket 49 and'the lower end of the housing, a socket plate 6! is preferably provided. This. socket plate BI is seen in plan view in Fig. 5 and the edge may be seen in Figs. 1 and 2, and the dotted outline is shown in Fig. 3. This socket. plate 6i andthe end of the housing 41 are of course provided with holes 55 correspondingto thevholes 55 in thebracket, as well as. a

central aperture 5'! corresponding to the hole 57 for, mounting the snap switch therein. Conventional electric sockets 63 are mounted in and throughthe end wall of the housing H in outwardly opening relation for. receiving a fuse, 65 andan electric incandescent lamp 6'! to be connected into the control circuits, in a manner to be;subsequently described; The socket plate Bl hassuitable apertures GBfor passing the conventional electric sockets therethrough, the end wall of. the housing is provided with similar apertures, and. openings H are cut out.ofthe side walls of thebracket to. accommodate the sidesof these sockets. Mounted upon one of the side-walls of thebracket 49 is an. initiation or sequence relay R. Thestructure and operations of the switch anclthe. relay will be subsequently described in detaii with reference to the wiring diagram Fig. 10.

Alock." is secured and carried on a member to. be operated, as for example, on the rear or inner side ot-a door section panel l5 with its-.bolt l5. projecting to. one side suitably to engage the inclined surface or cam 11 on a lockstrike 19. isre ren sm ntiesca th t. s the door 0 other member descends. the lock bcltli is demay be any conventional cylinder and latch type oflock. So that the door or other member may be auto- 4 of a winding I IT in a manner common with such relays, as by means of the well known pawl and ratchet arrangement (not shown). This movable blade H5 is connected by a wire IIEI to one end of the coil III, where also is connected one end of the service line L2. From the other terminaloi the relay winding III a wire I2I connects the. one side of a convenient push button I23 or any other suitable actuating means. The

other line conductor LI connects to one end of the fuse 65 (by connection to one side of the fuse socket) from the other end of which a wire I25 connects to the center left-hand stationary conmatically unlocked when the electric motor is energized to open the door, I support thelock strike I9 movably for control by a solenoid or electromagnet 85, which is connected by wires 86" to be energized when the motor is energized, as will be subsequently described. For this purpose,

the lock strike IQ may be pivotally mounted on' a pivot pin 8! which is supported in a stationary plate 89 secured to the wall or door casing, as by screws 5%. The relation of the movable and the stationary parts of the lock strike are much like the two parts of a door hinge, except that a portionof the stationary plate 89 is bent away from the building structure to extend alongside the guide track II, and the movable partl9 of the lock strike is bent to curve around the guide rail IT, as may be seen in Figs. 8 and 9, with a portion 93 projecting to the other side of the pivot pin to be attracted as an armature by the electromagnet 85, to swing the cam and lock strike surface I9 back to the unlocked position, shown by dotted lines in Fig. 9. A spring 95 is provided curled around the mid-portion of the pivot pin 81. One end of this spring reacts against the stationary part of the lock strike so that the other end of the spring normally biases the movable part of the lock strike to the locking position, shown in full lines in Fig. 9. g V

Fig. 1G diagrammatically represents theponnection of the electric motor M'into a systemwith the service lines for energization and operation through the control devices previouslyjdescribed; The reversing switch 59 is a conventional 3-pole double throw switch having three blades tied together to move either to the right-hand side to operatively engage a corresponding set ofthree stationary contacts or to theleit-hand' side to engage another set of three stationary contacts.

From the upper and the middle blades of the re-' versing switch 59, wires IllI and I03 respectively extend to the terminals of one of the windings MI of the motor. The bottom blade of the reversing switch 59 is connected by a wire I05 to one terminal of the other winding M2, of the motor, and the other terminal of this winding is connected by a wire III] to the upper right-hand stationary contact, and from whence a wire IE9 connects to the center left-hand contact of this switch. From the bottom blade of thereversing switch, a wire connects to the upper left-hand and also to the central right-hand contacts, although this may be all accomplished by means of the single wire I05 extending from this blade to the motor. tact of the reversing switch a wire I II connects to the right-hand stationary contact of the initiating relay R, and a wire I I3 connects from the left-hand stationary contact of this relay to the From the lower right-hand coni left-hand lower contact of the reversingswitc'h.

The initiating or sequence relay R has a single movable blade I I5 which is moved to engage first one and then the other one of its two stationary ppmac by. t su e e ensrsiz tig puls lamp 61 is connected across the bottom and the --center left-hand contacts of the reversing switch 59, and the connection of the motor windings into the system is so selected that when this reversing switch is in its left-hand position, the direction of operation is to open the door. The lock release electromagnet is connected by wires 85 to the lower movable blade and to the left-hand center contact of the reversing switch. Hence the lamp 61 is lighted and the lo .1 is released when the system is energized to open" the door. In operation: By operating the push button I23 a circuit is completed which energizes the winding I ll of the sequence relay B. This causes the relay R to throw its blade II5 to its opposite or alternate position in a well known manner. This completes the motor energizing circuits, the two windings MI and M2 being energized to run the motor in a direction as predetermined by the set position of the reversing switch 59. As the controlled member or door I5 approaches its extreme position the reversing switch 59 is thrown over thus interrupting the operation and setting the motor circuits for reverse operation the next time the relay R is operated by the push button I23.

This throw over of the reversing switch is accomplished by means of a lever I29 which is piv-, otally supported on one of the screwed! on the bottom of the power unit. The inner end of this lever I29 is apertured and bent down suitably to receive the ball 56 on the lower end'of'the tog gle lever of the reversing switch. The other end of this lever carries a roller I3I projected suit ably from the power unit to be adjacent the door which carries a bracket I33 having an inclined cam I35 which strikes the roller and moves it outwardly toward the door. For clearness this operation is diagrammatically represented in Fig. 6 For the up limit operation, an up limit lever I3? is pivotally mounted on a stationary bracket I39 below the power unit and it extends up along the track ls to the door side of the switch lever, which it engages by a projection M0. The upper end of this up limit lever I3? is bent and provided with a roller [M which is suitably positioned to be pulled inwardly away from the door by the cable 3| as the door reaches'its uppermost position. This operation is diagrammatically shown in Fig. '7.

-In view of the power unit having controls compactly assembled it may be very conveniently installed and wired, as it can be pre-wired in the factory leaving only the local connections to be completed. The service conductors Li and L2 may be the conductors of a plug-in cord so that it is only necessary to plug in the energizingi connection after the power unit has been mounted in proper relation to its'limit controls.

it Fina l twi ba si ree new? whe 'ments may be made other button I23, or other actuating means, separately from the unit, as for example on the wall of the garage if it is to be used for operating a garage door. Also a plurality of the actuating push buttons i 23 may be provided and connected in parallel if desired, as represented in Fig. 10. Although application of the operator to a particular type of door operating installation has been represented, by way of example, it will be understood that it may be readily arranged to work in cooperation with travelling cable pulling carriages or other door operating systems, or even to move other members than doors, by disposing the limit and reversing'switch suitably for operation by such an actuated member as it moves back and forth.

It is apparent that within the scope of my invention modifications and different arrangethan herein disclosed, and the present disclosure is illustrative merely, the invention comprehending variations thereof.

What is claimed as the invention is:

l. A compact member engageable operator unit for operating a member back and forth comprising, mounting means, a reversible electric motor mounted thereon and having speed reducing gears enclosed in a housing at one end of the motor, a second housing extending from the other end of the motor, a reversing switch mounted in said second housing, and switch actuating means extending from said reversing switch and exposed externally from the second housing so that by installation of the operator unit in a suitable operative relation to a member to be moved back and forth between two extreme positions said actuating means may be moved by direct engagement with said member to throw the reversing switch back and forth.

2. A compact member engageable operator unit in accordance with claim 1, and further characterized by having a sequence relay in said second housing for responding to an external control, said sequence relay being connected with said switch to complete motor energizing circuits prepared by said reversing switch.

3. A compact member engageable operator unit for operating a member back and forth comprising, mounting means, a reversible electric motor mounted thereon, said motor having speed reducing gears enclosed in a housing at one end of the motor, oppositely directed power takeoif connections, a second housing supported on the other end of the motor, a reversing switch mounted in said second housing, and switch actuating means extending from said reversing switch and projecting externally from the second housing so that by installation of the operator unit in a suitable operative relation to the path of a member to be moved back and forth between two extreme positions said actuating means may be operated by direct engagement with said member to throw the reversing switch back and forth.

CHARLES E. SCHLYTERN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,768,564 Campbell et al July 1, 1930 1,799,348 Apple Apr. 7, 1931 1,854,584 Gorman Apr. 19, 1932 2,430,729 Negri Nov. 11, 1947 2,454,832 Paulus Nov. 30, 1948 

